Furnace



P. MURPHY.

FURNACE. APPLICATION FILED 11111.11. 1919.

Patent-ea May 9, 1922.

5 wvemofc f EN JaaA rares PATENT Portieri;

PETER ivrnnrrrmor NEWARK, NnwJnRsnY.

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To @ZZ whom it may concern:

Be it yknown that l, PETER MURPHY, a subject of theKing of England, residingin 'the city of Newark, county of Essex, and Statev of New Jersey, have invented certaiirnewA and useful Improvements in' Furnaces, ofA

which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it pertains to'make, con- Struct, and use the same, reference being had to the accompanying drawings, and to numerals of reference marked thereon, forming a part of this specification.

My invention is applicable to furnaces of various kinds, but is especially adapted for Y use in heating rivets. 1

^ struct the furnacev so that the charges of riviA ets `to be heatedvmay be introducedin the.' top and taken out-at the -bottomof theA fur# An object of my inventionis to'produce a complete combustion and as :intense-heat as can be applicable with the fuelV burnt in the furnace.

Another object of my invention is to con'-,

nace.

Another object of my invention is to ,sirn-y *5 plify the constructionand'operation of the furnace, decreasing the number ofparts of which the usual vfurnace iscomposed; by

lesseningor avoiding the necessity Vfor'ad-V justment of thev various parts-,',by increasingl the convenience in manipulation ofthe fur- With thesel ends in view, my invention nace. Y

To this @mtr have' made .erlangten this Vall withthe obdevice fromV similar devices; ject of increased efficiency;

consists in certain novelties of construction and arrangement-sof partsas hereinaftery set forthand pointed out in the claims.

. 1vVhile the preferred form of my invention is illustrated in the accompanying drawings,

Application filed January 11, 1919. Seria1'No.'v270,`704.

p Specification of Letters Patent. i Pautgnlteid Magg, 19.22;

in; F ig. 2, looking in the direction indicated'y by the arrows. y Vly improved furnace is mounted upon -suitable supports l of any improved con struction, and -is arranged` inrtwo compartments, the upper compartment@ to receive the cold rivets toybe heated, and thelowercompartment 3 which receives the'rivets from` the fupper compartment and retains them until they are completely heated'. 4The upper and lower compartments of the fur--V nace at one end, are connected bya"contract 4 ed passage-way 4 fork the fire or 'flamev The peculiar shape of this furnace is not mate' rial; but Vconstructed in the form of a rectangle, as isbelieved tov be kthe most convene ient and best adapted tothe purpose in prac* tice. f v

The walls 5 are of the usualfire-b'rick and may be lined with fire clay or other suitable material, ifdesired. Theoutside of the fur. nace may be'covered with sheet' metal.

At theleft hand side of the furnace I place*r a retort 6 also of firefbrick and lined with,V Vtire clay or other suitable material,provided with'an opening 7 communicating with the' lower'compartment 3 ofthe furnace', so that,r

infactualpractice the* initial fire or flame tov from the lire-pan 8 can 'rst beintroduc'edrv into said lower compartment B through the'- -contracted passage-way l at the end thereof and thence into the upper compartment 2 and thence out through a suitable flu'e9 located in the top of the furnace.. Y

Conveniently arranged upon the underside ofthe retort 6, in any desired or convenient imanner, is the fire-panl y8` adapted to hold a -moderate supply'of suitable fuel supplied by gravity, by means of an o il supply pipell,

The retort 6 in three sides thereof, is pro'- Videdwith draft-openings l2, which may be closed by suitable removable means 13, having air-openings such as a perforated fire Y brick or the like, to permit the required cir-k culation of air around the fire-pa'nS. f

For ordina-ry purposes the air currents whichpass up and around the fire-pan 8 and throughk the draftilopening 14 inithe "bottom ofthe retort 6 will be sutlicient to keep alive the flame in the fire-pan but in case it is desiredl to concentrate the .draft and force the fire, one or all ofthe removablefmeans 18 from the tank lOwhich for convenience .may

"be located upon the topvof the furnace.l 95

,ishedheated, rivets are removed, from the lower compartment 3. v

rIfhe operation of myimproved furnace is substantially Vas follows :--y

The valvel controlling theoil or other fuel is opened permitting the fuel to be fed by gravity, linto the lire-pan 8 where it is` ignited; The aircirculating around and,

over the fire-pan into the retort 6, in practice has' been' found',y sufficient to maintain the 1 proper-draft and obtain the requisiterflame andheat inorderfto direct and introduce the c heat;` and flame through the opening 7, which communicates with the lowercompartment Sof the furnace,through the lower compartment 3j, through the contracted passageway7 4 at the end thereotand thence into the upper compartment 2 of the furnace, and;

thence. out throughy the Hue 9, as. clearly indicatedbythe arrowsl in FigzQ-of: the drawings,l In practice the rivetsv to beV heatedare vplaced in theupper-compartment,2.of the furnace and afterbeing partlyy heatedjthey arepassedjthrough the contracted passagewaygt into the-lower ccm'partaientk 3 and left 'v there until ,cornpletely heated, when` they;`

are removedg- In this mannera continuous charge of c oldrivetsisfplaced into, and a charge *ofi heated` rivets, removed fromVv the furnace..

'In' casekit is desired to concentrate the draft andforce the fire, one or more of' the removable means 13 may be removed from the draft-openings l2-for that-purpose. Y

It will .thus lbe seen thatwith my improved device, l: am enabled, by` gravity, to feed theoil or fuel to the fire-pan and to utilize. Y the natural draft which is/suliicient under ordinary.v circumstances, togive suiiicient heat for ,thel purposes rrequired and `that,

means are provided for. concentrating vthe draft and forcing the fire and flame over the rivetsxtoibe `heated in the flower and upperV compartments ot thefurnace.

Experiencehas demonstrated that the oi'-V` v vganizationy above Adescribed is a highly eff-f iic-ient one, andlwhilel have shown the pre- ,ferredembodiment of myl present invention do notwish to be'limited tothe exact dei `tails of construction shown and described,

as obvious modificationsthereof, not involving the exercise ofinvention, may be made-by anyskilled mechanic, and such departures from what is herein set forth, l consider kwithin the scope and terms of my claims. r

. Having thus described my invention, what l desire to secure by Letters Patent is:-V

l. In a heating furnace the combination of a furnace casing having an upperand a lower compartment extending lengthwise thereof, connected by a contracted passageway, at one end of the. casing, one `compartment being provided withan opening' for introducing articles to beY he a ted,andl the other compartment bein-gprovdedwith an openingl for removingfsuch articles, a retort at the othery end of the casing having ank opening communicating, with the 'lower compartment ofthe furnace casing, and-aY flue in,

thetopof the said furnace casing communieating with the Yupper compartment.

EZ. In aV heating furnacethe -conibinaticn Y' of a-furnace casinghaving an upperfand .a lower compartment .extending lengthwisey thereof, connected by a contractedA passageway, at vone, end: of the casing, one compartment being provided Y with `an opening. foriintroducing articles to be heated, and the other compartment being providednvith` an,

opening for removing such articles, a;retort,

at the other endrof the casing having-an openingfcomniunicating with thelowercompartment off-fthe furnacel casing, said retort topof the said furnace casinglvcomrnunficatinglwiththe upperccnipartment.`

being .furtherprovided with draftaopeningsp- Y removable `means provided vwith air-openings@ located 1n said openings, and a 'iiue 1n thaf .3. ,In ia heating Vfurnace the combinationot a furnace casing having an upperanda lower compartmentl "extending,lengthwise.A c thereof, connectedv by. a ccntracted paSSAagQr-J way, at one end ofV theL casing, one compartment being provided with an opening for introducingarticles to be, heate;dand the other compartment being, provided withy an;` opening for removingsuch articles, afretort at, the other end ofthe casing havingan opening communicating with thelower coin-Q` partment of the furnace casing, said retort c being further provi/dediwithfdraft openings,

remcvable means :provided with air-openings located 1n said openings, tire-pan secured to the loweropen. end ofthe retort, andi a flucjinvthe top/ofthe said furnace casing This specification; signedy and. witnessed this ath day of. January, 1919,4 c I Y PETER MURPHY. Witnesses:` I Q f FREDK C. lTIsClUlIL;V l I ANNA Ecran; Y

communicating with the upper compartment. 

